Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

(4)

Proposed maximum aggregate value of transaction:

(5)

Total fee paid:

o

Fee paid previously with preliminary materials.

o

Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration
statement number, or the Form or Schedule and the date of its filing.

Notice
is hereby given to stockholders of Hyperdynamics Corporation (the "Company") , that we are seeking the written consents of stockholders holding a majority of our issued and
outstanding shares of common stock, $0.001 par value per share (the "Common Stock"), as of July 7, 2017 (the "Record Date"), acting in lieu of a meeting, to authorize and approve the following
proposal:

To
amend our Certificate of Incorporation, as amended (the "Amendment") to effect a reverse stock split (the "Reverse Stock Split") of the Company's "Common Stock at a ratio within a range between
one-for-two (1:2) and one-for-six (1:6) (the "Split Ratio"), with the exact Split Ratio to be determined within that range by the Board of Directors in its sole discretion, and with such Reverse Stock
Split to be effective at such date and time, if at all, as determined by the Board of Directors in its sole discretion.

On
June 30, 2017, the Board approved the Reverse Stock Split and the Amendment and determined to solicit the requisite votes of the stockholders of the Company entitled to vote
thereon for their approval of the Reverse Stock Split and the Amendment, by written consents in lieu of a meeting, and to take all actions necessary or desirable in furtherance of such approval. The
Board has fixed July 7, 2017, as the Record Date for the purpose of determining the stockholders entitled to consent in writing, in lieu of a meeting, to the Reverse Stock Split and the
Amendment.

This Notice of Consent Solicitation is being issued by the Company and is intended to be mailed on or about July 12, 2017 to all our holders of Common Stock as of the Record Date.
We are not holding a special meeting of stockholders in connection with the proposal described herein.
The Consent Solicitation Statement on the
following pages describes the matters presented to stockholders herein.

The Board requests that you sign, date and return the Consent included as
Annex A
to the Consent
Solicitation Statement in the enclosed envelope (or by telephone or via the internet) as soon as possible, but no later than July 26, 2017.

The
proxy materials are available at: http://www.astproxyportal.com/ast/18390. (Individual Control Numbers necessary to access the proxy materials are provided on the individual
Consent Cards.)

This
Consent Solicitation Statement is furnished to the holders of common stock, $0.001 par value per share (the "Common Stock") of
Hyperdynamics
Corporation
, a Delaware corporation (the "Company," "we," "our" or "us") as of July 7, 2017 (the "Record Date"), requesting their approval, by written consent in lieu of
a meeting (the "Consents"), of the following proposal (the "Proposal"):

To
amend our Certificate of Incorporation, as amended (the "Amendment") to effect a reverse stock split (the "Reverse Stock Split") of the Company's Common Stock at a ratio within a range between
one-for-two (1:2) and one-for-six (1:6) (the "Split Ratio"), with the exact Split Ratio to be determined within that range by the Board of Directors in its sole discretion, and with such Reverse Stock
Split to be effective at such date and time, if at all, as determined by the Board of Directors in its sole discretion.

On
June 30, 2017, the Board approved the Reverse Stock Split and the Amendment and directed the Company to solicit the requisite votes of the stockholders of the Company entitled
to vote thereon for their approval of the Reverse Stock Split and the Amendment, by the Consents. The Board has fixed July 7, 2017 as the Record Date for the purpose of determining the
stockholders entitled to give their Consents to the Reverse Stock Split and the Amendment.

We are not holding a special meeting of stockholders in connection with the Proposal described herein.
The Consent Solicitation Statement
on the following pages describes the matters presented to stockholders in this Consent Solicitation. Approval of the Proposal requires receipt of the affirmative Consents of the holders of a majority
of our shares of Common Stock outstanding as of the Record Date (the "Majority Stockholders"). There are no rights of appraisal or similar rights of dissenters with respect to the Proposal.

Pursuant
to rules promulgated by the Securities and Exchange Commission (the "SEC"), we have elected to provide access to our proxy materials, consisting of the Notice of Consent
Solicitation, Consent Solicitation Statement, and the Consent Card both by sending you this full set of proxy materials and by notifying you of the availability of our proxy materials on the Internet.
In accordance with SEC rules, you may access our proxy materials at http://www.astproxyportal.com/ast/18390. (Individual Control Numbers necessary to access the proxy materials are provided on the
individual Consent Cards.)

To
be counted towards the Consents required for approval of the Proposal described herein, your Consent must be received within 60 days from the date of the earliest dated and
delivered Consents. Under the Delaware General Corporation Law ("DGCL"), the failure to timely deliver the Consents will have the same effect as a vote against the Proposal set forth
herein.

The
Board requests that you sign, date and return the Consent included as
Annex A
to the Consent Solicitation Statement in the
enclosed envelope (or submit your consent by telephone or via the
internet) as soon as possible, but no later than by
July 26, 2017
; provided, however, that our Board may extend the deadline to receive written
Consents in its sole discretion. A form of the Certificate of Amendment to our Certificate of Incorporation (the "Certificate of Amendment") to be filed with the Delaware Secretary of State to
implement the Reverse Stock Split is included as
Annex B
.

1

You
may revoke your written Consent at any time prior to the time that we have received a sufficient number of Consents to approve the Proposal set forth herein. A revocation may be in
any written form validly signed and dated by you, as long as it clearly states that the Consent previously given is no longer effective. The revocation should be sent to us at Hyperdynamics
Corporation, c/o American Stock Transfer & Trust Company, LLC, 6201 15th Ave, Brooklyn, NY 11219, Attention: William Torre; wtorre@astfinancial.com.

Our Board of Directors believes that certain large holders of our Common Stock, our executive officers and our directors may provide their Consents to the Proposal, although there has
been no formal request or agreement with respect thereto. As of the Record Date, 963,949 shares (approximately 3.5%) of our outstanding shares of Common Stock are believed to be controlled and
beneficially owned by our officers and directors, and 5,152,162 shares (approximately 18.7%) of our outstanding shares of Common Stock are believed to be controlled and beneficially owned by
holders of 5% or more of our outstanding Common Stock.

We
will pay the costs of soliciting these Consents. In addition to soliciting Consents by mail, our officers, directors and other regular employees, without additional compensation, may
solicit Consents personally, by facsimile, by e-mail or by other appropriate means. Banks, brokers, fiduciaries and other custodians and nominees who forward written Consents soliciting materials to
their principals will be reimbursed for their customary and reasonable out-of-pocket expenses.

Our
executive offices are located at 12012 Wickchester Lane, Suite 475, Houston, Texas 77079, and our telephone number there is 1-713-353-9400.

FREQUENTLY ASKED QUESTIONS

The following questions and answers are intended to respond to questions frequently asked by the holders of our Common Stock concerning the
actions approved by our Board
of Directors. These questions do not, and are not intended to, address all the questions that may be important to you. You should carefully read the entire Consent Solicitation Statement, as well as
its annexes and the documents incorporated by reference in this Consent Solicitation Statement.

Q:

WHO
IS ENTITLED TO CONSENT TO THE PROPOSAL DESCRIBED IN THIS CONSENT SOLICITATION STATEMENT?

A:

All
holders of our Common Stock as of the Record Date. As of July 7, 2017, there were 27,615,792 shares of our Common Stock issued and outstanding.

Q:

WHAT
IS THE DIFFERENCE BETWEEN HOLDING SHARES AS A STOCKHOLDER OF RECORD AND AS A BENEFICIAL OWNER?

A:

If
your shares are registered directly in your name with our transfer agent, American Stock Transfer & Trust Company, LLC, you are considered, with respect to those
shares, a "stockholder of record." If you are a stockholder of record, we have sent this Consent Solicitation Statement to you directly.

If
your shares of Common Stock are held in a stock brokerage account or by a bank or other nominee, you are considered the beneficial owner of shares held in "street name," and this Consent
Solicitation Statement is being forwarded to you by your broker, bank or nominee, which is considered the stockholder of record with respect to those shares. As the beneficial owner, you have the
right to direct your broker, bank or nominee to provide your Consent or to withhold Consent to the Proposal set forth herein. Your broker, bank or nominee has enclosed an instruction card for you to
use in directing the broker, bank or nominee regarding whether to Consents or to withhold Consent to the Proposal set forth herein. Your broker, bank or nominee

2

will
only be able to vote your shares with respect to the Proposal set forth herein if you have instructed it whether to provide your Consent. Your broker, bank or nominee has enclosed an instruction
form for you to use to direct the broker, bank, or other nominee regarding whether or not to provide the Consent. Please instruct your broker, bank or nominee to provide the Consent by using the
instruction form you received from them. Please return your completed written Consent or instruction form to your broker, bank or nominee and contact the person responsible for your account so that
your vote can be counted. If your broker, bank or nominee permits you to provide instructions via the Internet or by telephone, you may vote that way as well.

Q:

WILL
THERE BE A MEETING OF STOCKHOLDERS TO CONSIDER THE PROPOSAL SET FORTH IN THIS CONSENT SOLICITATION STATEMENT?

A:

No.
We will not hold a meeting of stockholders. We are incorporated in the State of Delaware. In accordance with our Bylaws, as amended, and Section 228 of the
DGCL, our stockholders are permitted to take action without a meeting if consents in writing are given by holders of outstanding stock having not less than the minimum number of votes that would be
necessary to take such action at a meeting.

Q:

WHAT
IS THE RECOMMENDATION OF OUR BOARD OF DIRECTORS AS TO THE PROPOSAL DESCRIBED IN THIS CONSENT SOLICITATION STATEMENT?

A:

Our
Board of Directors recommends that stockholders CONSENT TO (FOR) the Proposal set forth in this Consent Solicitation Statement.

Q:

WHAT
IS THE REQUIRED VOTE TO APPROVE THE PROPOSAL?

A.

The
Proposal must receive signed written Consents from holders of record on the Record Date of at least a majority of the issued and outstanding shares of our Common
Stock on the Record Date.

Q:

WHAT
DO I NEED TO DO NOW TO REGISTER MY CONSENT?

A:

After
carefully reading and considering the information contained in this Consent Solicitation Statement, you may Consent to the Proposal set forth herein by signing
and dating the enclosed written Consent and returning it by mail in the enclosed envelope as soon as possible. You may also register your Consent by facsimile or via electronic mail or on the internet
by following the instructions on
Annex A
.

Q:

WHAT
IF I DO NOT RETURN THE WRITTEN CONSENT?

A:

Because
the Proposal requires the written Consent of the holders of a majority of the outstanding shares of our Common Stock, your failure to respond will have the
same effect as voting AGAINST the Proposal.

Q:

CAN
I VOTE AGAINST THE PROPOSAL?

A:

We
are not holding a special meeting of our stockholders, so there will be no "yea" or "nay" vote, as such. However, because each Proposal requires the affirmative
Consents of the holders of a majority of our outstanding Common Stock, simply not delivering an executed written Consent in favor of our Proposal will have the same practical effect as a vote AGAINST
the Proposal would have if they were being considered at a special meeting of stockholders.

3

Q:

CAN
I REVOKE MY CONSENT AFTER I HAVE DELIVERED IT?

A:

If
you are the stockholder of record as of the Record Date, you may revoke your written Consent at any time prior to the time that we receive a sufficient number of
written Consents to approve the Proposal. A revocation may be in any written form validly signed and dated by you, as long as it clearly states that the Consent previously given is no longer
effective. The revocation should be sent to us at Hyperdynamics Corporation c/o American Stock Transfer & Trust Company, LLC, 6201 15th Ave, Brooklyn, NY 11219, Attention: William
Torre; wtorre@astfinancial.com.

If
your shares are held in a brokerage account by a broker, bank or other nominee, you should follow the instructions provided by your broker, bank or other nominee, provided that such revocation is
made prior to the time that we receive a sufficient number of written Consents to approve the Proposal set forth herein.

Q:

BY
WHEN MUST WE RECEIVE A SUFFICIENT NUMBER OF CONSENTS?

A:

We
are requesting you to send us your written Consents by July 26, 2017. Our Board of Directors may extend the deadline to receive written Consents in its sole
discretion.

Under
Section 228(c) of the DGCL the Consents will remain in effect until a sufficient number of Consents are received by us to take the actions proposed herein; provided, however, that such
Consents will not remain effective if Consents of at least a majority of the issued and outstanding shares of our Common Stock on the Record Date are not received within 60 days of the earliest
dated consent delivered.

Q:

WHAT
IS THE PURPOSE OF THE REVERSE STOCK SPLIT?

A:

Requisite
stockholder Consents to approve the Reverse Stock Split will authorize our Board of Directors, in its discretion, to file the Certificate of Amendment to
effect the Reverse Stock Split with the Secretary of the State of Delaware in order to effectuate the Reverse Stock Split. The purpose of the Reverse Stock Split is to enable us to meet the required
standards to list our Common Stock on a national securities exchange, such as The Nasdaq Capital Market, or on another national exchange. Our Common Stock is currently traded on the OTC Markets OTCQX
marketplace. The OTC Markets is a relatively thinly traded market and lacks the liquidity than may be provided by a stock exchange such as The Nasdaq Stock Market.

In
order to list our Common Stock on the Nasdaq Capital Market or on another national exchange, among other requirements, our Common Stock must maintain a minimum closing bid price of $4.00. As of
July 10, 2017, the closing bid price of our Common Stock on the OTC Markets OTCQX marketplace was $1.42 per share. During the fiscal year ended June 30, 2017, the closing bid price of
our Common Stock on the OTC Markets OTCQX marketplace ranged between $0.35 and $2.77. We believe that completing the Reverse Stock Split will result in an increase in our adjusted share price that may
enable us to "uplist" our shares to the Nasdaq Capital Market or another exchange, assuming all of the other listing requirements of such exchange have also been satisfied. There can be no assurance
that following Reverse Stock Split the market price of our Common Stock will increase, or will increase in such proportion to permit us to "uplist" our shares on the Nasdaq Capital Market or another
exchange.
We have not applied to list our Common Stock on the Nasdaq Capital Market or any other exchange, and no assurance can be given that, even if we satisfy the listing
requirements of The Nasdaq Stock Market or another exchange, we will apply to have our Common Stock listed on any exchange, or that, if we do so apply, our application will be approved, or that, if
our Common Stock is listed on any exchange, we will be able to satisfy the maintenance requirements for continued listing.
In addition, no assurances can be given that the
market price for our Common Stock will increase in the same proportion as the Reverse Stock Split or, if increased, that such price will be maintained.

4

Application for or approval of our Common Stock for listing on the Nasdaq Capital Market is NOT a condition or requirement for our effecting the Reverse Stock Split after
receiving the requisite number of stockholder Consents. Our Board will have complete discretion as to whether or not to consummate the Reverse Stock Split after receipt of shareholder
approval.

The
proposed Certificate of Amendment to effectuate the Reverse Stock Split is discussed in detail below under "Proposal". The full text of the proposed Certificate of Amendment is included as
Exhibit B
to this Consent Solicitation Statement.

Q:

WHEN
WOULD THE REVERSE STOCK SPLIT BECOME EFFECTIVE?

A:

Consummation
of filing the Reverse Stock Split, within the stockholder-approved range referred to herein, will be subject to a final decision by our Board of
Directors and certain conditions, including completion of review of the Reverse Stock Split by FINRA. In the event that our Board of Directors determines to effectuate the Reverse Stock Split in its
sole discretion, we will file the Certificate of Amendment to consummate the Reverse Stock Split with the Delaware Secretary of State, which will become effective following the date and time of filing
and upon the announcement of the Reverse Stock Split by FINRA.

Q:

WHAT
HAPPENS IF THE REVERSE STOCK SPLIT DOES NOT RECEIVE CONSENTS FROM OUR MAJORITY STOCKHOLDERS?

A:

If
the Proposal to authorize the Reverse Stock Split does not receive Consents from our Majority Stockholders, then we will not be able to effectuate the Reverse
Stock Split.

If
we do not receive the approval for the Reverse Stock Split, we likely will not be able to meet the qualification requirement of a minimum bid price in order to list our Common Stock on the Nasdaq
Capital Market or another national securities exchange in the near future. This may preclude our ability to access capital from certain institutional and other investors who would not invest in an
unlisted stock. Certain institutional and other investors also may not be willing to invest in a "penny stock" (a stock that has a market price of less than $5.00 per share).

Q:

CAN
I REQUIRE YOU TO PURCHASE MY STOCK?

A:

No.
Under the DGCL, you are not entitled to appraisal and purchase of your Common Stock as a result of the Reverse Stock Split.

Q:

WHO
WILL PAY THE COSTS OF SOLICITING CONSENTS AND EFFECTING THE REVERSE STOCK SPLIT?

A:

We
will pay all of the costs of soliciting written Consents to the Proposal, exhibits, annexes and documents incorporated by reference in this Consent Solicitation
Statement, including the distribution of this Consent Solicitation Statement. To effectuate the Reverse Stock we will pay all necessary expenses associated with filing of the Certificate of Amendment
with the Secretary of State of the State of Delaware and submission of the proposed Reverse Stock Split to FINRA for its review. We may also pay brokerage firms and other custodians for their
reasonable expenses for forwarding information materials to the beneficial owners of our Common Stock. We may also pay the fees of a proxy solicitation firm if we choose to engage one.

Important Notice Regarding the Availability of Proxy Materials for the Consents

Copies of the proxy materials, consisting of the Notice of Consent Solicitation, Consent Solicitation Statement, and the Consent Card are
available at http://www.astproxyportal.com/ast/18390. (Individual Control Numbers necessary to access the proxy materials are provided on the individual Consent Cards.)

5

PROPOSAL

TO AMEND OUR CERTIFICATE OF INCORPORATION
TO EFFECT A REVERSE STOCK SPLIT OF OUR COMMON STOCK
WITHIN A RANGE OF 1:2-1:6

Holders of Common Stock of the Company as of the Record Date are requested to approve the Amendment to our Certificate of Incorporation, to
effect the Reverse Stock Split of the Company's Common Stock at the Split Ratio (in a range between one-for-two and one-for-six (1:2-1:6)), with the exact Split Ratio to be determined within that
range by the Board in its sole discretion, and with such Reverse Stock Split to be effective at such date and time, if at all, as determined by the Board in its sole discretion.

On
June 30, 2017, our Board adopted a resolution declaring the Reverse Stock Split and the Amendment advisable and in the best interests of the Company and its stockholders and
directing that the Reverse Stock Split and the Amendment be submitted to stockholders of the Company entitled to vote thereon for their approval by the Consents.

The
Board currently intends to effect the Reverse Stock Split in order to increase the per share trading price of our Common Stock, which is currently trading on the OTCQX marketplace,
to a level sufficiently above the minimum bid price requirement that is required for initial listing on The Nasdaq Capital Market and to apply for initial listing on The Nasdaq Capital Market or
another national securities exchange (which is $4.00 in the case of The Nasdaq Capital Market), at such time as we
otherwise meet the other quantitative and qualitative requirements for listing. The Board believes that the availability of a range of the Split Ratio will provide the Company with the flexibility to
implement the Reverse Stock Split in a manner designed to maximize the anticipated benefits for us and our stockholders. In determining the appropriate Split Ratio to implement the Proposal, if any,
following the approval by Majority Stockholders, our Board of Directors will consider the following factors:

(a)

our
ability to qualify for initial listing on The Nasdaq Capital Market or another national securities exchange;

(b)

the
historical trading price and trading volume of our Common Stock;

(c)

the
then prevailing trading price and trading volume of our Common Stock and the anticipated impact of the Reverse Stock split on the trading market for our Common
Stock;

(d)

our
capitalization (including the number of shares of Common Stock issued and outstanding);

(e)

which
Split Ratio within the range of the Split Ratio would result in the greatest overall reduction in our administrative costs; and

(f)

prevailing
general market and economic conditions.

Assuming
that we receive approval of the Proposal by our Majority Stockholders and the Board determines, in its sole discretion, the appropriate Split Ratio, the Reverse Stock Split will
become effective upon the filing of the Certificate of Amendment with the Secretary of State of the State of Delaware. The exact timing of the filing of the Charter Amendment will be determined by the
Board, in its sole discretion, based upon its evaluation of when such action will be most advantageous to the Company and our stockholders.

The
Board reserves the right, notwithstanding approval of the Proposal by the Majority Stockholders, and without further action by our stockholders, to elect not to proceed with the
Reverse Stock Split if, at any time prior to filing the Certificate of Amendment, the Board, in its sole discretion, determines that listing of our Common Stock on the Nasdaq Capital Market or another
national securities exchange it is no longer in the best interests of the Company and our stockholders, or for any other reason.

6

One
principal effect of the Reverse Stock Split would be to decrease the number of outstanding shares of our Common Stock. Except for
de
minimis
adjustments that may result from the treatment of fractional shares as described below, the Reverse Stock Split will not have any dilutive effect on our stockholders,
since each stockholder would hold the same percentage of our Common Stock outstanding immediately following the Reverse Stock Split as such stockholder held immediately prior to the Reverse Stock
Split. The relative voting and other rights that accompany the shares of Common Stock would not be affected by the Reverse Stock Split. Although the Reverse Stock Split will not have any dilutive
effect on our stockholders, the proportion of shares owned by our stockholders relative to the number of shares authorized for issuance will decrease, because the Reverse Stock Split does not change
the current authorized capital stock of the Company, consisting of 87,000,000 shares of Common Stock and 20,000,000 shares of preferred stock, $0.001 par value per share. The remaining authorized
shares of Common Stock and preferred stock may be used for various purposes, including, without limitation, raising capital, providing equity incentives to employees, officers or directors, effecting
stock dividends, establishing strategic relationships with other companies and expanding our business through the acquisition of other businesses or products.

Reasons for the Reverse Stock Split

As noted above, the Board's primary objective in proposing the Reverse Stock Split is to enable the Company to raise the per share trading price
of our Common Stock, which is currently trading only on the OTCQX marketplace, to allow for a listing of our Common Stock on The Nasdaq Capital Market or another national securities exchange (assuming
that at the time we submit our listing application, we will satisfy the other listing criteria). Upon receiving stockholder approval, the Board may, in its sole discretion, select an appropriate Split
Ratio and file the Certificate of Amendment with the Secretary of State of the State of Delaware. Thereafter, the Board may, in its sole discretion, seek to obtain approval for listing on the Nasdaq
Capital Market or another national securities exchange.

Our
Board has determined that by increasing the market price per share of our Common Stock, we would meet Nasdaq's stock price element of the listing requirements (a minimum $4.00 per
share) and our Common Stock could be listed on The Nasdaq Capital Market if we meet the other listing and corporate governance requirements. Our Board concluded that the liquidity and marketability of
our Common Stock may be adversely affected if it is not quoted on a national securities exchange, as investors can find it more difficult to dispose of, or to obtain accurate quotations as to the
market value of, our Common Stock while traded on the OTCQX marketplace. Our Board believes that current and prospective investors and the brokerage community may view an investment in our Common
Stock more favorably if our Common Stock is quoted on a national security exchange, such as The Nasdaq Capital Market.

Our
Board also believes that the Reverse Stock Split and any resulting increase in the per share price of our Common Stock should enhance the acceptability and marketability of our
Common Stock to the financial community and investing public. Many institutional investors have policies prohibiting them from holding lower-priced stocks in their portfolios, which reduces the number
of potential buyers of our Common Stock. Additionally, analysts at many brokerage firms are reluctant to recommend lower-priced stocks to their clients or monitor the activity of lower-priced stocks.
Brokerage houses frequently have internal practices and policies that discourage individual brokers from dealing in lower-priced stocks. Further, because brokers' commissions on lower-priced stock
generally represent a higher percentage of the stock price than commissions on higher priced stock, investors in lower-priced stocks pay transaction costs which are a higher percentage of their total
share value, which may limit the willingness of individual investors and institutions to purchase our Common Stock.

Neither
our Board nor the Company has proposed the Reverse Stock Split in response to any effort of which we are aware to accumulate our shares of Common Stock or obtain control of the
Company, nor is it a plan by management to recommend a series of similar actions to our Board or

7

our
stockholders. Notwithstanding the decrease in the number of outstanding shares of Common Stock following the Reverse Stock Split, the Board does not intend for this transaction to be the first
step in a "going private transaction" within the meaning of Rule 13e-3 of the Securities Exchange Act of 1934 (the "Exchange Act"). In addition, the Company currently has sufficient authorized
shares to be issued upon exercise or conversion of outstanding options, warrants and convertible securities, and does not currently have any plans, proposals or arrangements to issue any of the
authorized shares that would become newly available as a result of the Reverse Stock Split. Nevertheless, in order to support our projected need for additional equity capital and to provide
flexibility to raise the capital as necessary, our Board believes the number of shares of Common Stock should be maintained at 87,000,000 shares, and the number of shares of authorized preferred stock
should remain at 20,000,000 shares.

We
do not believe that our officers or directors have interests in the Proposal that are different from or greater than those of any other of our stockholders.

Potential Disadvantages of the Reverse Stock Split

While we believe that the Reverse Stock Split would be in the best interests of the Company and its stockholders, we cannot assure you, however,
that the Reverse Stock Split will accomplish this objective for any meaningful period of time. While we expect that the reduction in the number of outstanding shares of Common Stock will increase the
market price of our Common Stock, we cannot assure you that after the Reverse Stock Split the market price of our Common Stock will increase proportionately to reflect the ratio for the Reverse Stock
Split, that the market price of our Common Stock will not decrease to its pre-split level, that our market capitalization will be equal to the market capitalization before the Reverse Stock Split, or
that we will satisfy the other listing criteria or will be listed on The Nasdaq Capital Market or another national securities exchange, or once initially listed, that we will be able to maintain such
listing.

The
price of our Common Stock is dependent upon many factors, including our business and financial performance, general market conditions and prospects for future success. If the per
share market price does not increase proportionately as a result of the Reverse Stock Split, then the value of our Company as measured by our market capitalization will be reduced, perhaps
significantly.

The
number of shares held by each individual stockholder would be reduced if the Reverse Stock Split is implemented. This may also increase the number of stockholders who hold less than
a "round lot," or 100 shares. This has two disadvantages. First, the rules of The Nasdaq Capital Market require that we have at least 300 round lot stockholders. Second, the transaction costs to
stockholders selling "odd lots" are typically higher on a per share basis. Consequently, the Reverse Stock Split could increase the transaction costs to existing stockholders in the event they wish to
sell all or a portion of their position.

Although
our Board believes that the decrease in the number of shares of our Common Stock outstanding as a consequence of the Reverse Stock Split and the anticipated increase in the
market price of our Common Stock could encourage interest in our Common Stock and possibly promote greater liquidity for our stockholders, such liquidity could also be adversely affected by the
reduced number of shares outstanding after the Reverse Stock Split. As a result, there can be no assurance that the Reverse Stock Split, if completed, will result in the intended benefits described
above, that the market price of our Common Stock will increase following the reverse stock split or that the market price of our Common Stock will not decrease in the future.

Effecting the Reverse Stock Split

Upon receipt of approval for the Proposal by the Majority Stockholders, if our Board concludes that it is in the best interests of our Company
and our stockholders to effect the Reverse Stock Split, the Certificate of Amendment will be filed with the Secretary of State of the State of Delaware. The

8

actual
timing of the filing of the Certificate of Amendment with the Secretary of State of the State of Delaware to effect the Reverse Stock Split will be determined by our Board. In addition, if for
any reason our Board deems it advisable to do so, the Reverse Stock Split may be abandoned at any time prior to the filing of the Certificate of Amendment, without further action by our stockholders.
In addition, our Board may deem it advisable to effect the Reverse Stock Split even if the price of our Common Stock is above $4.00 per share at the time the Reverse Stock Split is to be effected. The
Reverse Stock Split will be effective as of the date of filing with the Secretary of State of the State of Delaware or at such time and date as specified in the Certificate of Amendment (the
"Effective Time").

Upon
the filing of the Certificate of Amendment, without further action on our part or our stockholders, the outstanding shares of Common Stock held by stockholders of record as of the
Effective Time would be converted into a lesser number of shares of Common Stock based on a Reverse Stock Split ratio between one-for-two and one-for-six, as determined by the Board in its sole
discretion. For example, if you presently hold 6,000 shares of our Common Stock, you would hold 3,000 shares of our Common Stock following the Reverse Stock Split if the ratio is one-for-two or you
would hold 1,000 shares of our Common Stock if the ratio is one-for-six.

Effect of the Reverse Stock Split on Registration, Voting Rights and Authorized Shares

The Reverse Stock Split will affect all stockholders equally and will not affect any stockholder's proportionate equity interest in the Company.
None of the rights currently accruing to holders of our Common Stock will be affected by the Reverse Stock Split. If and when our Board elects to effect the Reverse Stock Split, the principal effect
will be to proportionately decrease the number of outstanding shares of our Common stock based on the appropriate Split Ratio selected by
our Board, as described below under "
Effects of the Reverse Stock Split on Issued and Outstanding Shares of Common Stock"
below.

Proportionate
voting rights and other rights of the holders of our Common Stock will not be affected by the Reverse Stock Split, other than as a result of the treatment of fractional
shares as described below. For example, a holder of 2% of the voting power of the outstanding shares of our Common stock immediately prior to the effectiveness of the Reverse Stock split will
generally continue to hold 2% of the voting power of the outstanding shares of our Common Stock after the reverse stock split. The number of stockholders of record will not be affected by the Reverse
Stock Split (except to the extent any are cashed out as a result of holding fractional shares). If approved and implemented, the Reverse Stock Split may result in some stockholders owning "odd lots"
of less than 100 shares of our Common Stock. Odd lot shares may be more difficult to sell, and brokerage commissions and other costs of transactions in odd lots are generally somewhat higher than the
costs of transactions in "round lots" of even multiples of 100 shares. Our Board believes, however, that these potential effects are outweighed by the potential benefits of the Reverse Stock Split.

The
Reverse Stock Split also will have no effect on the number of authorized shares of our capital stock: the authorized number of shares of our Common Stock will remain at 87,000,000,
and the authorized number of shares of our preferred stock will remain at 20,000,000. As a result, the proportion of shares owned by our stockholders relative to the number of shares authorized for
issuance will decrease, and the additional authorized shares of Common Stock will be available for issuance at such times and for such purposes as our Board may deem advisable without further action
by our stockholders, except as required by applicable laws and regulations. If our Common Stock is initially listed on The Nasdaq Capital Market, stockholder approval must be obtained, under
applicable Nasdaq Capital Market, rules prior to the issuance of shares for certain purposes, including the issuance of Common Stock equal to or greater than 20% of our then outstanding shares of
Common Stock in connection with a private refinancing or an acquisition or merger, unless an exemption is available from such approval. Such an exemption would be available if our audit committee at
that time authorized the filing of a prior written application with The Nasdaq Capital Market to waive the

9

stockholder
vote requirement if it believed the delay associated with securing such vote would seriously jeopardize our financial viability and the Exchange granted us such an exemption. In accordance
with our Certificate of Incorporation and DGCL, our shareholders do not have any preemptive rights to purchase or subscribe for any of our unissued or treasury shares.

Effects of the Reverse Stock Split on Issued and Outstanding Shares of Common Stock

Shares of Common Stock issued and outstanding at the time that the Reverse Stock Split is completed will be affected by the Reverse Stock Split.
Depending on exact Split Ratio of the Reverse Stock Split, as determined by our Board, two, three, four, five or six shares of existing Common Stock will be combined into one new share of Common
Stock. The number of shares of Common Stock issued and outstanding will therefore be reduced, depending upon the Split Ratio determined by the Board. The table below shows the number of issued and
outstanding shares of our Common Stock as of the Record Date that will result from the listed hypothetical Reverse Stock Split ratios (without giving effect to the treatment of fractional shares):

Hypothetical
reverse stock
split ratio

Approximate number of shares of
common stock
outstanding following
the Reverse Stock Split

1-for-2

13,807,896

1-for-3

9,205,264

1-for-4

6,903,948

1-for-5

5,523,158

1-for-6

4,602,632

The
actual number of shares outstanding after giving effect to the Reverse Stock Split, if implemented, will depend on the reverse stock split ratio that is ultimately determined by the
Board.

If
approved and effected, the Reverse Stock Split will be realized simultaneously and in the same ratio for all of our common stock. The reverse stock split will affect all holders of
our Common Stock uniformly and will not affect any stockholder's percentage ownership interest in the Company, except, that, as described below in "
Fractional
Shares
," holders of Common Stock otherwise entitled to a fractional share as a result of the reverse stock split will receive a cash payment in lieu of such fractional share.
These cash payments will reduce the number of post-reverse stock split holders of our Common Stock to the extent there are currently stockholders who would otherwise receive less than one share of
Common Stock after the reverse stock split. In addition, the Reverse Stock Split will not affect any stockholder's proportionate voting power (subject to the treatment of fractional shares).

Effect on Par Value

Pursuant to the Reverse Stock Split, each holder of our Common Stock outstanding immediately prior to the effectiveness of the Reverse Stock
Split ("Old Common Stock") will become the holder of fewer shares of our Common Stock ("New Common Stock") after consummation of the Reverse Stock Split. Although the Reverse Stock Split will not, by
itself, impact our assets or prospects, the Reverse Stock Split could result in a decrease in the aggregate market
value of our Common Stock. The Board believes that this risk is outweighed by the benefits of listing of our Common Stock on The Nasdaq Capital Market.

The
par value per share of the Common Stock will remain unchanged at $0.001 per share after the Reverse Stock Split. As a result, on the Effective Time of the Reverse Stock Split, if
any, the stated capital on our balance sheet attributable to the Common Stock will be reduced proportionately based on the Split Ratio, from its present amount, and the additional paid-in capital
account will be credited with the amount by which the stated capital is reduced. After the Reverse Stock Split, net income or

10

loss
per share and other per share amounts will be increased proportionally because there will be fewer shares of our Common Stock outstanding. In future financial statements, net income or loss per
share and other per share amounts for periods ending before the Reverse Stock Split would be recast to give retroactive effect to the Reverse Stock Split. As described below under
"
Effects of the Reverse Stock Split on Outstanding Convertible Securities
," the per share exercise price of outstanding option awards and warrants and
conversion price of outstanding convertible preferred stock would increase proportionately, and the number of shares of our Common Stock issuable upon conversion of outstanding convertible preferred
stock and exercise of outstanding options and warrants would decrease proportionately, in each case based on the specific Split Ratio, as will be determined by the Board, in its sole discretion. The
Company does not anticipate that any other accounting consequences would arise as a result of the Reverse Stock Split.

Effect on the Company's 2010 Equity Incentive Plan

As of the Record Date, we had approximately 1,115,165 shares subject to stock options and have granted awards for 326,146 unvested shares of
restricted stock under our 2010 Equity Incentive Plan, as amended (the "2010 Plan"). Under the 2010 Plan the Compensation, Nominating, and Corporate Governance Committee of our Board of Directors has
sole discretion to determine the appropriate adjustment to the awards granted thereunder in the event of a stock split. Should the reverse stock split be effected, the number and class of shares
underlying shares authorized to be granted or granted under the 2010 Plan, and the price per share payable upon exercise of an award as applicable shall be equitably adjusted by the Compensation,
Nominating, and Corporate Governance Committee of our Board of Directors to reflect such changes. The Compensation, Nominating, and Corporate Governance Committee has approved proportionate
adjustments to the number of shares outstanding and available for issuance under the 2010 Plan and proportionate adjustments to the exercise price, grant price or purchase price relating to any award
under the 2010 Plan.

Accordingly, if the Reverse Stock Split is approved by the Majority Stockholders, upon the filing of the Certificate of Amendment with the Secretary of State of the State of Delaware,
the number of all outstanding equity awards, the number of shares available for issuance and the exercise price, grant price or purchase price relating to any award under the 2010 Plan will be
proportionately adjusted using the Split Ratio selected by our Board of Directors (subject to the treatment of fractional shares to be determined by our Board of Directors). The Compensation,
Nominating, and Corporate Governance Committee has also authorized the Company to effect any other changes necessary, desirable or appropriate to give effect to the Reverse Stock Split, including any
applicable technical, conforming changes to our 2010 Plan. For example, if a 1-for-4 Reverse Stock Split is effected, the 682,808 shares that remain available for issuance under the 2010 Plan as of
the Record Date, would be adjusted to 170,702 shares, subject to increase as and when awards made under such Plan expire or are forfeited and are returned per the terms of the 2010 Plan. In addition,
under that example, the exercise price per share under each stock option would be increased by four times, such that upon an exercise, the aggregate exercise price payable by the optionee to the
Company would remain the same. For illustrative purposes only, an outstanding stock option for 2,000 shares of common stock, exercisable at $1.00 per share, would be adjusted as a result of a 1-for-4
Split Ratio into an option exercisable for 500 shares of Common Stock at an exercise price of $4.00 per share.

Effect on our Outstanding Convertible Securities

If the Reverse Stock Split is effected, the number of shares of our Common Stock that may be purchased upon exercise of outstanding convertible
preferred stock, warrants or other securities convertible into, or exercisable or exchangeable for, shares of our Common Stock, and the exercise or conversion prices for these securities, will be
ratably adjusted in accordance with their terms as of the Effective Time. Thus, if the Reverse Stock Split is effected, the number of shares of Common Stock

11

issuable
upon exercise or conversion of such securities will automatically be reduced in the same ratio as the reduction in the number of shares of outstanding Common Stock. Correspondingly, the per
share exercise or conversion price of such securities will be increased in direct proportion to the Stock Split ratio, so that the aggregate dollar amount payable for the purchase of the shares
underlying warrants will remain unchanged. Similarly, the per share conversion price of convertible preferred stock will be increased in direct proportion to the Reverse Stock Split ratio, and the
aggregate number of shares of Common Stock issuable upon conversion of convertible preferred stock will be correspondingly reduced.

Effect on Registration and Stock Trading

Our Common Stock is currently registered under Section 12(g) of the Exchange Act, and we are subject to the periodic reporting and other
requirements of the Exchange Act. If our Common Stock becomes listed on an Exchange, we would file a short form registration statement for our Common Stock to be registered under
Section 12(b) of the Exchange Act. We currently do not intend to seek any change in our status as a reporting company for federal securities law purposes, either before or after the Reverse
Stock Split, except to have our Common Stock moved from a registration pursuant to Section 12(g) to Section 12(b) under the Exchange Act.

If
the proposed Reverse Stock Split is implemented and an application for listing is made and accepted on The Nasdaq Capital Market or another exchange, we will request that our Common
Stock be listed under the symbol "HDYN"; however we cannot guarantee that the exchange will permit our use of "HDYN." If "HDYN" is not available to us, we will announce our new symbol as soon as
practicable.

Effect on Registered and Beneficial Holders

Upon completion of the Reverse Stock Split, if you hold registered shares of Old Common Stock in a book-entry form, you do not need to take any
action to receive your shares of New Common Stock in registered book-entry form, if applicable. On or after the Effective Time, the Company's transfer agent will automatically send a transaction
statement to your address of record as soon as practicable after the Effective Time indicating the number of shares of New Common Stock you hold.

If
any stockholders of record hold their shares of our Common stock in certificate form, they will receive a transmittal letter from the Company's transfer agent as soon as practicable
after the effective time of the Reverse Stock Split, if any. The transmittal letter will be accompanied by instructions specifying how to exchange your certificate representing the Old Common Stock
for a statement of holding or a certificate of New Common Stock. No service charges, brokerage commissions or transfer taxes shall be payable by any holder of any Old Certificate, except that if any
New Certificate is to be issued in a name other than that in which the Old Certificate(s) are registered, it will be a condition of such issuance that (1) the person requesting such issuance
must pay to us any applicable transfer taxes or establish to our satisfaction that such taxes have been paid or are not payable, (2) the transfer complies with all applicable federal and state
securities laws, and (3) the surrendered certificate is properly endorsed and otherwise in proper form for transfer.

Stockholders
who hold shares in street name through a nominee (such as a bank or broker) will be treated in the same manner as stockholders whose shares are registered in their names,
and nominees will be instructed to effect the Reverse Stock Split for their beneficial holders. However, nominees may have different procedures and stockholders holding shares in street name should
contact their nominees. Stockholders will not have to pay any service charges in connection with the exchange of their certificates.

12

Fractional Shares

The Company does not intend to issue fractional shares in connection with the Reverse Stock Split. Holders of record of our Common Stock who
otherwise would be entitled to receive fractional shares because they hold, as of a date prior to the Effective Time of the Reverse Stock Split, a number of shares of our Common Stock not evenly
divisible will be entitled to a cash payment in lieu thereof. The cash payment will equal the product obtained by multiplying (a) the fraction to which the stockholder would otherwise be
entitled by (b) the per share closing sales price of our Common Stock on the trading day immediately prior to the day of the Effective Time of the Reverse Stock Split, as quoted on the OTCQX
marketplace. The ownership of a fractional interest will not give the holder thereof any voting, dividend or other rights except to receive payment therefor as described herein.

Holders
of our Common Stock should be aware that, under the escheat laws of the various jurisdictions where our stockholders reside, where we are domiciled and where the funds will be
deposited, sums due for fractional interests that are not timely claimed after the Effective Time may be required to be paid to the designated agent for each such jurisdiction. Thereafter, holders of
our Common Stock otherwise entitled to receive such funds may have to seek to obtain them directly from the state to which they were paid.

As of the Record Date, we had 84 holders of record of our Common Stock (although we have significantly more beneficial holders). We do not expect the Reverse Stock Split to result in a
significant reduction in the number of record holders.

Anti-Takeover and Dilutive Effects

The purpose of maintaining our authorized Common Stock at 87,000,000 after the Reverse Stock Split is to facilitate our ability to raise
additional capital to support our operations, not to establish any barriers to a change of control or acquisition of our Company. The shares of Common Stock that are authorized but unissued provide
our Board with flexibility to effect, among other transactions, public or private refinancings, acquisitions, stock dividends, stock splits and the granting of equity incentive awards. However, these
authorized but unissued shares may also be used by our Board, consistent with and subject to its fiduciary duties, to deter future attempts to gain control of us or make such actions more expensive
and less desirable. The Reverse Stock Split would give our Board authority to issue additional shares from time to time without delay or further action by the stockholders except as may be required by
applicable law or the Nasdaq rules. The Reverse Stock Split is not being recommended in response to any specific effort of which we are aware to obtain control of us, nor does our Board have any
present intent to use the authorized but unissued Common Stock to impede a takeover attempt. There are no plans or proposals to adopt other provisions or enter into any arrangements that have material
anti-takeover effects.

In
addition, the issuance of additional shares of Common Stock for any of the corporate purposes listed above could have a dilutive effect on earnings per share and the book or market
value of our outstanding Common Stock, depending on the circumstances, and would likely dilute a stockholder's percentage voting power in us. Holders of our Common Stock are not entitled to preemptive
rights or other protections against dilution. Our Board intends to take these factors into account before authorizing any new issuance of shares.

No Appraisal Rights

Under the DGCL, our stockholders are not entitled to appraisal or dissenter's rights with respect to the Reverse Stock Split, and we will not
independently provide our stockholders with any such rights.

13

Accounting Consequences

As of the Effective Time, the stated capital attributable to Common Stock on our balance sheet will be reduced proportionately based on the
Reverse Stock Split ratio (including a retroactive adjustment for prior periods), and the additional paid-in capital account will be credited with the amount by which the stated capital is reduced.
Reported per common share net income or loss (and any other per common share measure) will be proportionally higher because there will be fewer shares of our Common Stock outstanding.

Certain Federal Income Tax Consequences of the Reverse Stock Split

The following discussion is a general summary of certain U.S. federal income tax consequences of the reverse stock split that may be relevant to
(i) holders of our Common Stock that hold such stock as a capital asset for U.S. federal income tax purposes and (ii) to us. This summary is based upon the provisions of the Internal
Revenue Code of 1986, as amended (the "Code"), Treasury regulations promulgated thereunder, administrative rulings and judicial decisions as of the date hereof, all of which may change, possibly with
retroactive effect, resulting in U.S. federal income tax consequences that may differ from those discussed below. This discussion does not address all aspects of U.S. federal income taxation that may
be relevant to such holders in light of their particular
circumstances or to holders that may be subject to special tax rules, including, without limitation: (i) holders subject to the alternative minimum tax; (ii) banks, insurance companies,
or other financial institutions; (iii) tax-exempt organizations; (iv) dealers in securities or commodities; (v) regulated investment companies or real estate investment trusts;
(vi) partnerships (or other flow-through entities for U.S. federal income tax purposes and their partners or members); (vii) traders in securities that elect to use a mark-to-market
method of accounting for their securities holdings; (viii) U.S. Holders (as defined below) whose "functional currency" is not the U.S. dollar; (ix) persons holding our Common Stock as a
position in a hedging transaction, "straddle," "conversion transaction" or other risk reduction transaction; (x) persons who acquire shares of our Common Stock in connection with employment or
other performance of services; or (xi) U.S. expatriates. In addition, this summary does not address the tax consequences arising under the laws of any foreign, state or local jurisdiction and
U.S. federal tax consequences other than U.S. federal income taxation. If a partnership (including any entity or arrangement treated as a partnership for U.S. federal income tax purposes) holds shares
of our Common Stock, the tax treatment of a holder that is a partner in the partnership generally will depend upon the status of the partner and the activities of the partnership.

We
have not sought, and will not seek, an opinion of counsel or a ruling from the Internal Revenue Service ("IRS") regarding the U.S. federal income tax consequences of the reverse stock
split and there can be no assurance the IRS will not challenge the statements and conclusions set forth below or that a court would not sustain any such challenge. EACH HOLDER OF COMMON STOCK SHOULD
CONSULT SUCH HOLDER'S TAX ADVISOR WITH RESPECT TO THE PARTICULAR TAX CONSEQUENCES OF THE REVERSE STOCK SPLIT TO SUCH HOLDER.

For
purposes of the discussion below, a "U.S. Holder" is a beneficial owner of shares of our Common Stock that for U.S. federal income tax purposes is: (1) an individual citizen
or resident of the United States; (2) a corporation (including any entity treated as a corporation for U.S. federal income tax purposes) created or organized in or under the laws of the United
States, any state or political subdivision thereof; (3) an estate the income of which is subject to U.S. federal income taxation regardless of its source; or (4) a trust, the
administration of which is subject to the primary supervision of a U.S. court and as to which one or more U.S. persons have the authority to control all substantial decisions of the trust, or that has
a valid election in effect to be treated as a U.S. person. A "Non-U.S. Holder" is a beneficial owner (other than a partnership) of shares of our Common Stock who is not a U.S. Holder.

14

U.S. Holders

The Reverse Stock Split should constitute a "recapitalization" for U.S. federal income tax purposes. As a result, a U.S. Holder generally should
not recognize gain or loss upon the reverse stock split, except with respect to cash received in lieu of a fractional share of our Common Stock, as discussed below. A U.S. Holder's aggregate tax basis
in the shares of our Common Stock received pursuant to the reverse stock split should equal the aggregate tax basis of the shares of our Common Stock surrendered (excluding any portion of such basis
that is allocated to any fractional share of our Common Stock), and such U.S. Holder's holding period (i.e. acquired date) in the shares of our Common Stock received should include the holding
period in the shares of our Common Stock surrendered. Treasury regulations promulgated under the Code provide detailed rules for allocating the tax basis and holding period of the shares of our Common
Stock surrendered to the shares of our Common Stock received pursuant to the reverse stock split. Holders of shares of our Common Stock acquired on different dates and at different prices should
consult their tax advisors regarding the allocation of the tax basis and holding period of such shares.

A
U.S. Holder who receives cash in lieu of a fractional share of our Common Stock pursuant to the reverse stock split should recognize capital gain or loss in an amount equal to the
difference between the amount of cash received and the U.S. Holder's tax basis in the shares of our Common Stock surrendered that is allocated to such fractional share of our Common Stock. Such
capital gain or loss should be long term capital gain or loss if the U.S. Holder's holding period for our Common Stock surrendered exceeded one year at the Effective Time. Long-term capital gains of
non-corporate U.S. Holders are generally subject to reduced rates of taxation. The deductibility of capital losses is subject to limitations. Capital gains recognized by individuals, trusts and
estates also may be subject to a 3.8% federal Medicare contribution tax.

Information Reporting and Backup Withholding

Information returns generally will be required to be filed with the IRS with respect to the receipt of cash in lieu of a fractional share of our
Common Stock pursuant to the reverse stock split in the case of certain U.S. Holders. In addition, U.S. Holders may be subject to a backup withholding tax (at the current applicable rate of 28%) on
the payment of such cash if they do not provide their taxpayer identification numbers (in the case of individuals, their social security number) in the manner required or otherwise fail to comply with
applicable backup withholding tax rules. Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules may be refunded or allowed as a credit against the U.S.
Holder's federal income tax liability, if any, provided the required information is timely furnished to the IRS.

Non-U.S. Holders

Non-U.S. Holders who exchange shares of our Common Stock pursuant to the reverse stock split generally should be subject to tax in the manner
described above under "U.S. Holders," except that any capital gain realized by a Non-U.S. Holder as a result of receiving cash in lieu of a fractional share of our Common Stock generally should not be
subject to U.S. federal income or withholding tax unless:



the Non-U.S. Holder is an individual who holds our Common Stock as a capital asset, is present in the U.S. for 183 days or more during
the taxable year of the reverse stock split and meets certain other conditions;



the gain is effectively connected with the Non-U.S. Holder's conduct of a trade or business in the U.S. (or, if certain income tax treaties
apply, is attributable to a Non-U.S. Holder's permanent establishment in the U.S.); or

15



we are or have been a "United States real property holding corporation" for U.S. federal income tax purposes at any time within the shorter of
the five-year period ending on the Effective Time, or the period that the Non-U.S. Holder held the shares of our Common Stock. We do not believe that we have been, currently are, or will become, a
United States real property holding corporation.

Individual
Non-U.S. Holders who are subject to U.S. federal income tax because they are present in the United States for 183 days or more during the year of the reverse stock
split will be taxed on gain recognized as a result of receiving cash in lieu of a fractional share of common at a flat rate of 30% or such lower rate as may be specified by an applicable income tax
treaty. Other Non-U.S. Holders subject
to U.S. federal income tax with respect to gain recognized as a result of receiving cash in lieu of a fractional share of Common Stock generally will be taxed on such gain in the same manner as if
they were U.S. Holders and, in the case of foreign corporations, may be subject to an additional branch profits tax at a 30% rate or such lower rate as may be specified by an applicable income tax
treaty.

Information Reporting and Backup Withholding.
In general, backup withholding and information reporting will not apply to payment of
cash in lieu of a
fractional share of our Common Stock to a Non-U.S. Holder pursuant to the reverse stock split if the Non-U.S. Holder certifies under penalties of perjury that it is a Non-U.S. Holder and neither we
nor the transfer agent has actual knowledge to the contrary. Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules may be refunded or allowed as a credit
against the Non-U.S. Holder's U.S. federal income tax liability, if any, provided that certain required information is timely furnished to the IRS. In certain circumstances the amount of cash paid to
a Non-U.S. Holder in lieu of a fractional share of our Common Stock, the name and address of the beneficial owner and the amount, if any, of tax withheld may be reported to the IRS.

Text of Proposed Amendment; Effectiveness

The text of the proposed Certificate of Amendment is set forth in
Annex B
to this Consent
Solicitation Statement. If and when effected by our Board, the Certificate of Amendment will become effective upon its filing with the Secretary of State of the State of Delaware.

Vote Required and Board Recommendation

Approval of the Proposal requires the affirmative vote of a majority of the issued and outstanding shares of Common Stock as of the Record Date.
The Board of
Directors recommends a vote "FOR" the approval of the Amendment to effect the Reverse Stock Split.

The following table sets forth certain information as of the Record Date, with respect to the beneficial ownership of shares of Common Stock by
(1) each person known to us that owns beneficially more than 5% of the outstanding shares of Common Stock, (2) each of our directors, (3) each of our executive officers, and
(4) all of our executive officers and directors as a group. As of the Record Date, we had 27,615,792 shares of Common Stock outstanding. Beneficial ownership is determined in accordance with
Rule 13d-3 under the Securities Exchange Act. In computing the number of shares beneficially owned by a person or group and the percentage ownership of that person or group, shares of our
Common Stock subject to options currently exercisable or exercisable within 60 days after the Record Date are deemed outstanding, but are not deemed outstanding for purposes of computing the

16

percentage
ownership of any other person. The address of each director & officer named in the below table is c/o Hyperdynamics Corporation, 12012 Wickchester Lane, Suite 475 Houston, TX
77079.

Name and Address of Beneficial Owner

Amount and Nature
of Beneficial
Ownership

Percentage of
Class(1)

5% Stockholders

BlackRock, Inc.(1)

1,844,576

(1)

6.7

%

Pacific Drilling Operations Limited

5,362,382

(2)

18.1

%

Named Executive Officers and Directors

Ray. Leonard

743,676

(3)

2.6

%

Ian Norbury

98,000

(4)

*

Patricia N. Moller

65,000

(5)

*

William O. Strange

157,808

(6)

*

Fred S. Zeidman

95,875

(7)

*

Gary D. Elliston

445,808

(8)

1.6

%

Jason D. Davis

65,089

(9)

*

All directors and officers as a group (7 persons)

1,672,256

5.9

%

(1)

This
amount is based on ownership reported by BlackRock, Inc., as of December 31, 2016, in a Schedule 13G filed with the SEC. The address of
BlackRock, Inc. is 55 East 52nd Street, New York, NY 10055.

(2)

Consists
of 3,307,586 shares of Common Stock and warrants to purchase 2,054,796 shares of Common Stock. The address of Pacific Drilling Operations Limited is 11700
Katy Freeway, Suite 175, Houston, TX 77079.

(3)

This
amount includes: (a) 491,677 shares of Common Stock, (b) options to purchase 103,272 shares of Common Stock and a warrant to purchase 62,521
shares of Common Stock, (c) 69,035 shares of Common stock issuable upon conversion of up to 77 shares of the Series A Preferred Stock that Mr. Leonard may acquire pursuant to the
option in connection with the Series A Preferred Stock, and (d) a warrant to purchase up to 17,171 shares of Common Stock that Mr. Leonard may acquire pursuant to that option.

(4)

This
amount includes: 3,000 shares of Common Stock and options to purchase 95,000 shares of Common Stock.

(5)

This
amount includes: no shares of Common Stock and options to purchase 65,000 shares of Common Stock.

(6)

This
amount includes: 38,372 shares of Common Stock, warrants to purchase 25,686 shares of Common Stock and options to purchase 93,750 shares of Common Stock.

(7)

This
amount includes: 1,375 shares of Common Stock and options to purchase 94,500 shares of Common Stock.

(8)

This
amount includes: 390,122 shares of Common stock (all pledged as security), warrants to purchase 25,686 shares of Common stock and options to purchase 30,000
shares of Common Stock.

(9)

This
amount includes: 39,403 shares of Common Stock and warrants to purchase 25,686 shares of Common Stock; does not include options to purchase 40,000 shares of
Common stock, as these options are not currently vested and are not exercisable within 60 days after July 7, 2017.

17

There
are no existing arrangements that may result in a change in control of the Company.

STOCKHOLDER PROPOSALS

Proposals of stockholders intended to be presented at our next annual meeting of shareholders must be received by us a reasonable amount of time
prior to when we begin to print and send our proxy materials for such meeting. These proposals must comply with the requirements as to form and substance established by the SEC for such proposals in
order to be included in the proxy statement. If the shareholder fails to give notice in reasonable time prior to when we begin to print and send our proxy materials for such meeting, then the persons
named as proxies in the proxies solicited by our Board of Directors for our next annual meeting may exercise discretionary voting power regarding any such proposal.

"HOUSEHOLDING" OF PROXY MATERIALS

Some banks, brokers and other nominee record holders may employ the practice of "householding" proxy statements and annual reports. This means
that only one copy of this Consent Solicitation Statement may have been sent to multiple stockholders residing at the same household. If you would like to obtain an additional copy of this Consent
Solicitation Statement, please contact us at Hyperdynamics Corporation, c/o American Stock Transfer & Trust Company, LLC, 6201 15th Ave, Brooklyn, NY 11219, Attention: William
Torre. If you want to receive separate copies of our proxy statements and annual reports in the future, or if you are receiving multiple copies and would like to receive only one copy for your
household, you should contact your bank, broker or other nominee record holder.

WHERE YOU CAN OBTAIN ADDITIONAL INFORMATION

We file annual, quarterly, current and other reports and other information with the SEC. Certain of our SEC filings are available over the
Internet at the SEC's web site at www.sec.gov. You may also read and copy any document we file with the SEC at its public reference room by writing to the Public Reference Room of the SEC at
100 F Street, N.E., Room 1580, Washington, D.C. 20549. Callers in the United States can also call 1-800-SEC-0330 for further information on the operations of the public reference
facilities.

18

ANNUAL REPORT AND OTHER MATTERS

Our Annual Report on Form 10-K for the fiscal year ended June 30, 2016, which was made available to stockholders preceding this
proxy statement on the website of the SEC, located at
www.sec.gov
, contains financial and other information about our company, but is not incorporated
into this Proxy Statement and is not to be considered a part of these proxy soliciting materials or subject to Regulations 14A or 14C or to the liabilities of Section 18 of the
Securities Exchange Act of 1934, as amended.

WE
WILL PROVIDE, WITHOUT CHARGE, A PRINTED COPY OF OUR ANNUAL REPORT ON FORM 10-K FOR THE FISCAL YEAR ENDED JUNE 30, 2016, AS FILED WITH THE SEC, TO EACH STOCKHOLDER OF RECORD AS OF THE
RECORD DATE THAT REQUESTS A COPY IN WRITING. ANY EXHIBITS LISTED IN THE FORM 10-K REPORT ALSO WILL BE FURNISHED UPON REQUEST AT THE ACTUAL EXPENSE INCURRED BY US IN FURNISHING SUCH EXHIBITS. ANY SUCH
REQUESTS SHOULD BE DIRECTED TO OUR COMPANY'S SECRETARY AT OUR EXECUTIVE OFFICES SET FORTH IN THIS PROXY STATEMENT.

ALL
STOCKHOLDERS ARE URGED TO EXECUTE THE ACCOMPANYING PROXY AND TO RETURN IT PROMPTLY IN THE ACCOMPANYING ENVELOPE. STOCKHOLDERS MAY REVOKE ANY PROXY IF SO DESIRED AT ANY TIME BEFORE IT
IS VOTED.

The undersigned, being a holder of record of shares of common stock, par value $0.001 per share (the "
Common Stock
") of
Hyperdynamics Corporation. (the
"Corporation"
) as of July 7, 2017 (the Record Date established by the Corporation's Board of Directors for the
purpose of determining the stockholders entitled to consent hereto), hereby takes the following action, in accordance with Bylaws of the Corporation, as amended to date, and pursuant to
Sections 228 and 242
of the Delaware General Corporation Law, with respect to all shares of Common Stock held by the undersigned, with respect to the Proposal set forth below, as the same is described in the Consent
Solicitation Statement on Schedule 14A, dated July 11, 2017.

The
Board of Directors of the Corporation recommends that Stockholders CONSENT to the adoption of the following resolutions of the stockholders of the Corporation:

RESOLVED
, that the Corporation is hereby authorized to amend its Certificate of Incorporation, as amended, to effect a reverse stock split
of the Company's Common Stock at a ratio within a range between one-for-two (1:2) and one-for-six (1:6) (the "
Split Ratio
"), with the exact Split Ratio
to be determined within that range by the Board of Directors in its sole discretion, and with such Reverse Stock Split to be effective at such date and time, if at all, as determined by the Board of
Directors in its sole discretion; and further

RESOLVED
, that the form of the Certificate of Amendment to the Certificate of Incorporation of the Corporation attached as
Annex B
to the Consent Solicitation Statement dated July 11, 2017, be, and it hereby is, authorized, approved and adopted in all respects,
with such additions, deletions or modifications, not inconsistent herewith, as the Chief Executive Officer or the Chief Financial Officer of the Company may approve.

(Place an "X" in the appropriate box)

o
CONSENT (FOR)

o
CONSENT WITHHELD (AGAINST)

INSTRUCTIONS:
TO
CONSENT OR WITHHOLD CONSENT TO THE APPROVAL OF THE PROPOSAL, CHECK THE APPROPRIATE BOX ABOVE.
IF NO BOX IS MARKED
ABOVE WITH RESPECT TO EACH PROPOSAL, THE UNDERSIGNED WILL BE DEEMED TO HAVE
CONSENTED
TO THE PROPOSAL.

INTERNET: Visit
http://www.astproxyportal.com/ast/18390. Click on the Consent and enter your control number.

A-1

EMAIL: Send
email to admin12@amstock.com with Hyperdynamics CorporationConsent in the subject line.

[print name of record stockholder

Dated:

as set forth on the books of the Corporation

[signature of record stockholder or person authorized to sign on behalf of record stockholder]

[title or authority of authorized person, if applicable]

[signature, if held jointly]

If
an individual, please sign exactly as the name appears on the certificate or on the Direct Registration Statement representing your shares of Common Stock. If a corporation,
partnership, trust, limited liability company or other entity, please identify the entity as the name appears on the certificate or on the Direct Registration Statement representing your shares of
Common Stock, cause an authorized person to sign on behalf of the entity, and clearly identify the title of such authorized person. This Consent shall vote all shares to which the signatory is
entitled. This Consent, together with all written Consent in substantially the same form, shall be treated as a single Consent of stockholders.

A-2

ANNEX B

STATE OF DELAWARE

CERTIFICATE OF AMENDMENT

OF CERTIFICATE OF INCORPORATION

Hyperdynamics Corporation
(the "Corporation"), a corporation organized and existing under and by
virtue of the General Corporation Law of the State of Delaware (the "DGCL"), hereby adopts this Certificate of Amendment (this "Certificate of Amendment"), which amends its Certificate
of Incorporation (the "Certificate of Incorporation"), as described below, does hereby further certify that:

FIRST:
This Certificate of Amendment of the Certificate of Incorporation was duly adopted at a meeting of the Board of Directors of the
Corporation
in accordance with Section 141(b) of the DGCL proposing and declaring advisable the amendment to the Certificate of Incorporation described herein. The resolution setting forth the proposed
amendment is as follows:

RESOLVED
, that the Certificate of Incorporation of the Corporation be amended to amend and restate in its entirety the paragraph preceding
Section (a) of Article IV, so that, as amended and restated, the first paragraph of said Article IV shall be read as follows:

"As
determined by the Board of Directors of the Corporation, in the exercise of its sole discretion, effective as of the close of business, Eastern Time, on the date of filing of this Certificate of
Amendment with the Secretary of State of the State of Delaware (the "Effective Time"), each [ ] ( ) shares
of the Corporation's common stock, par
value $0.001 per share, outstanding immediately prior to the Effective Time shall, automatically and without any action on the part of the respective holders thereof, be exchanged for and combined
into one (1) validly issued, fully paid and non-assessable share of the Corporation's common stock, par value $0.001 per share (the "Reverse Stock Split"). No fractional shares shall be issued
in connection with the Reverse Stock Split. In lieu thereof, any stockholder who otherwise would be entitled to receive a fraction of a share of common stock as a result of the Reverse Stock Split
shall be entitled to receive a cash payment in an amount equal the fair value of such fraction of a share as of the Effective Time. At the Effective Time, there shall be no change in the number of
authorized shares that the Corporation shall have the authority to issue."

SECOND:
That thereafter, pursuant to resolutions of the Board of Directors of the Corporation, the Certificate of Amendment was
submitted to the
stockholders of the Corporation for their approval by written consents in accordance with the provisions of Sections 228 and 242 of the DGCL.

THIRD:
That this Certificate of Amendment to the Certificate of Incorporation was duly adopted by written consents of majority of the
outstanding
shares entitled to vote in lieu of a meeting of stockholders of the Corporation pursuant to Section 242 of the DGCL.

FOURTH:
All other provisions of the Certificate of Incorporation shall remain in full force and effect.

IN WITNESS WHEREOF
, the Corporation has caused this Certificate of Amendment of the Certificate of Incorporation to be executed this
day of , 2017.

HYPERDYNAMICS CORPORATION

By:

Name:

Ray Leonard

Title:

President and Chief Executive Officer

B-1

WRITTEN CONSENT OF STOCKHOLDERS OF HYPERDYNAMICS CORPORATION Please sign, date and mail your consent form in the envelope provided as soon as possible. Please detach along perforated line and mail in the envelope provided. 00000300000000000000 4073117 IF NO BOX IS MARKED ABOVE WITH RESPECT TO EACH PROPOSAL, THE UNDERSIGNED WILL BE DEEMED TO HAVE CONSENTED TO THE PROPOSAL. PLEASE SIGN, DATE AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE. PLEASE MARK YOUR VOTE IN BLUE OR BLACK INK AS SHOWN HERE x The Board of Directors of the Corporation recommends that Stockholders CONSENT to the adoption of the following resolutions of the stockholders of the Corporation: CONSENT CONSENT WITHHELD RESOLVED, that the Corporation is hereby authorized to amend its Certificate of Incorporation, as amended, to effect a reverse stock split of the Companys Common Stock at a ratio within a range between one-for-two (1:2) and one-for-six (1:6) (the Split Ratio), with the exact Split Ratio to be determined within that range PLACE AN X IN THE APPROPRIATE BOX (FOR) (AGAINST) by the Board of Directors in its sole discretion, and with such Reverse Stock Split to be effective at such date and time, if at all, as determined by the Board of Directors in its sole discretion; and further RESOLVED, that the form of the Certificate of Amendment to the Certificate of Incorporation of the Corporation attached as Annex B to the Consent Solicitation Statement dated July 11, 2017, be, and it hereby is, authorized, approved and adopted in all respects, with such additions, deletions or modifications, not inconsistent herewith, as the Chief Executive Officer or the Chief Financial Officer of the Company may approve. INSTRUCTIONS: TO CONSENT OR WITHHOLD CONSENT TO THE APPROVAL OF THE PROPOSAL, CHECK THE APPROPRIATE BOX ABOVE. IF NO BOX IS MARKED ABOVE WITH RESPECT TO EACH PROPOSAL, THE UNDERSIGNED WILL BE DEEMED TO HAVE CONSENTED TO THE PROPOSAL. To change the address on your account, please check the box at right and indicate your new address in the address space above. Please note that changes to the registered name(s) on the account may not be submitted via this method. Print Name of StockholderDate: Signature of Stockholder Note: Please print and sign exactly as your name or names appear on this Consent Form.

0 WRITTEN CONSENT OF STOCKHOLDERS OF HYPERDYNAMICS CORPORATION THIS CONSENT IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS The undersigned, being a holder of record of shares of common stock, par value $0.001 per share (the Common Stock) of Hyperdynamics Corporation. (the Corporation) as of July 7, 2017 (the Record Date established by the Corporations Board of Directors for the purpose of determining the stockholders entitled to consent hereto), hereby takes the fol-lowing action, in accordance with Bylaws of the Corporation, as amended to date, and pur-suant to Sections 228 and 242 of the Delaware General Corporation Law, with respect to all shares of Common Stock held by the undersigned, with respect to the Proposal set forth below, as the same is described in the Consent Solicitation Statement on Schedule 14A, dated July 11, 2017. TH E BO A R D O F DI R E C TO R S O F T H E CO R P O R AT I O N R E C O M M E N D S T H AT STO C K H O L D E R S CONSENT TO T H E A D O P T I O N O F T H E F O L L O W I N G R E S O L U T I O N S : (Continued and to be signed on the reverse side.) ------------------14475

WRITTEN CONSENT OF STOCKHOLDERS OF HYPERDYNAMICS CORPORATION CONSENT VOTING INSTRUCTIONS INTERNET - Access www.voteproxy.com and follow the on-screen instructions or scan the QR code with your smartphone. Have your written consent form available when you access the web page. TELEPHONE - Call toll-free 1-800-PROXIES (1-800-776-9437) in the United States or 1-718-921-8500 from foreign countries from any touch-tone telephone and follow the instructions. Have your written consent form available when you call. COMPANY NUMBER ACCOUNT NUMBER MAIL - Mark, sign and date your Consent and return it in the postage-paid envelope we have provided or return it to Hyperdynamics Corporation, c/o American Stock Transfer & Trust Company, LLC, 6201 15th Ave, Brooklyn, NY 11219, Attention: William Torre; wtorre@astfinancial.com. FACSIMILE Mark, sign and date your Consent and return it via fax to 1-718-765-8763 Please detach along perforated line and mail in the envelope provided IF you are not voting via the Internet or telephone. 00000300000000000000 4073117 IF NO BOX IS MARKED ABOVE WITH RESPECT TO EACH PROPOSAL, THE UNDERSIGNED WILL BE DEEMED TO HAVE CONSENTED TO THE PROPOSAL. PLEASE SIGN, DATE AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE. PLEASE MARK YOUR VOTE IN BLUE OR BLACK INK AS SHOWN HERE x The Board of Directors of the Corporation recommends that Stockholders CONSENT to the adoption of the following resolutions of the stockholders of the Corporation: CONSENT CONSENT WITHHELD RESOLVED, that the Corporation is hereby authorized to amend its Certificate of Incorporation, as amended, to effect a reverse stock split of the Companys Common Stock at a ratio within a range between one-for-two (1:2) and one-for-six (1:6) (the Split Ratio), with the exact Split Ratio to be determined within that range PLACE AN X IN THE APPROPRIATE BOX (FOR) (AGAINST) by the Board of Directors in its sole discretion, and with such Reverse Stock Split to be effective at such date and time, if at all, as determined by the Board of Directors in its sole discretion; and further RESOLVED, that the form of the Certificate of Amendment to the Certificate of Incorporation of the Corporation attached as Annex B to the Consent Solicitation Statement dated July 11, 2017, be, and it hereby is, authorized, approved and adopted in all respects, with such additions, deletions or modifications, not inconsistent herewith, as the Chief Executive Officer or the Chief Financial Officer of the Company may approve. INSTRUCTIONS: TO CONSENT OR WITHHOLD CONSENT TO THE APPROVAL OF THE PROPOSAL, CHECK THE APPROPRIATE BOX ABOVE. IF NO BOX IS MARKED ABOVE WITH RESPECT TO EACH PROPOSAL, THE UNDERSIGNED WILL BE DEEMED TO HAVE CONSENTED TO THE PROPOSAL. To change the address on your account, please check the box at right and indicate your new address in the address space above. Please note that changes to the registered name(s) on the account may not be submitted via this method. Print Name of StockholderDate: Signature of Stockholder Note: Please print and sign exactly as your name or names appear on this Consent Form.